OTM15 Equivalent & Substitute Parts

Part Overview

The OTM15 is a midget fast-acting fuse designed for PC mount applications, manufactured by Mersen USA Newburyport-MA L.L.C. This component is classified as an uncategorized fuse assembly and maintains active product status. Identifying equivalent substitute parts is necessary to ensure supply chain continuity, support design flexibility across manufacturing batches, and maintain operational compatibility when the primary part becomes unavailable.

Substiute Parts

OTM15

Mersen USA Newburyport-MA L.L.C.In Stock: 815OTM15 Datasheet

Current PartRFQ

0BLF015.T

Littelfuse Inc.In Stock: 9750BLF015.T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The OTM15 has one identified equivalent substitute: the 0BLF015.T manufactured by Littelfuse Inc. Substitution eligibility is determined by the following critical parameters:

• Current Rating: 15A
• Voltage Rating: 250 VAC
• Response Time: Fast Blow
• Package Type: Midget form factor (5AG, 10mm x 38mm)
• Fuse Classification: Cartridge type with fast-acting characteristics
• Compliance: ROHS3 Compliant

Both parts meet these core electrical and mechanical specifications, establishing functional equivalence for applications requiring a 15A, 250 VAC fast-acting midget fuse.

Parameter Comparison

Engineering Selection Recommendations

Both the OTM15 and 0BLF015.T are active products with ROHS3 compliance, ensuring regulatory alignment for current manufacturing standards. The 0BLF015.T carries CSA and UR approvals, providing additional certification coverage for industrial and electrical applications. Selection between these parts should be based on:

• Availability requirements and inventory status
• Specific mounting configuration compatibility (PC mount vs. holder-based installation)
• Packaging format preference (Box vs. Bulk)
• Certification requirements for the target application

Frequently Asked Questions (FAQ)

Q: Can the 0BLF015.T directly replace the OTM15 in all applications?

A: Both parts share identical electrical specifications (15A, 250 VAC, fast-acting response). However, the OTM15 is specified for PC mount applications, while the 0BLF015.T requires a holder. Mechanical compatibility must be verified based on your specific mounting configuration.

Q: What is the difference between "PC mount" and "cartridge with holder" fuses?

A: PC mount fuses are soldered or mounted directly to printed circuit boards. Cartridge fuses with holders are installed in separate mechanical holders. These represent different mounting methodologies and require different board layouts or enclosure designs.

Q: Are both parts RoHS compliant?

A: Yes, both the OTM15 and 0BLF015.T are ROHS3 compliant, meeting current environmental and regulatory standards.

Q: What certifications does the 0BLF015.T carry?

A: The 0BLF015.T holds CSA and UR approvals, supporting use in industrial and electrical applications requiring third-party certification.

Q: What is the physical size of the 0BLF015.T?

A: The 0BLF015.T measures 0.406" diameter by 1.500" length (10.31mm x 38.10mm), classified as a 5AG midget cartridge fuse.

Q: What is the DC cold resistance of the 0BLF015.T?

A: The DC cold resistance is 0.0092 Ohms at rated conditions.

Q: What is the breaking capacity of the 0BLF015.T?

A: The breaking capacity is 10kA at the rated voltage of 250 VAC.